Earth-anchor.



J. BLACKBURN.

EARTH ANCHOR.

APPLICATION HLED FEB. 5. 1911.

19272364 Patefited July 16, 1918.

JASPER BLACKBURN, OF WEBSTER GROVES, MISSOURI.

EARTH-ANCHOR.

ataaea.

Specification of Letters Patent.

Patented ma as, 1918.

Application filed February 5, 1917. Serial No. 146,707.

To all whom it may concern:

Be it known that I, JASPER BLACKBURN, a citizen of the United States, and resident of Webster Groves, county of St. Louis, and State of Missouri, have invented certain new and useful Improvements in Earth-Anchors, of which the following is a specification containing a full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof.

My invention relates to certain improvements in anchors, and has for its object an anchor which is easily installed, cheap to manufacture, and when installed it pulls against the solid earth. In the drawings,-

Figure 1 is a plan View of my anchor, illustrating the bottom View of the anchor when expanded.

Fig. 2 is a top plan view of the anchor when expanded.

Fig. 3 is a top plan view of the anchor when closed.

Fig. 4 is a sectional View taken on the line 44 of Fig. 1, when the anchor is expanded and in use, and

Fig. 5 is a section taken on the line 55 of Fig. 1.

Referring by numerals to the accompanying drawings, 6 indicates the top plate of my improved anchor, which is cast or rolled and is approximately about 5% inches wide and about 13 inches long. Said plate is provided with a circular opening or socket 7, and is provided with an annular flange 8, which forms a continuation of said opening and whose inner surface is flush with the wall of said opening. 1

Projecting from the inside surface of said flange 8 is a diaphragm or head 9, in which is formed a semi-cylindricalopening or recess 10. 11 and 12 indicate ribs or flanges carried by the plate 6, which are adapted to be pressed into the earth and prevent said plate from rotating, While the remaining plate of the anchor is adjusted in the proper position. 13 indicates the other or companion plate of the anchor, which is of the same dimensions as the top plate 6.

Said plate is provided with a cylindrical socket 1 1, in which the annular flange of the plate 6 is adapted to be seated, thus forming a pivotal connection between the plates and prevents bodily lateral movement of one plate to the other. This pivotal connection answers the means toermit relative rotation of the plates so tliat the longitudinal tioned or adjusted to the longitudinal axls of the other late.

The cylin rical socket 14 is practically closed by a head 15, in which is formed a cylindrical opening 16 and a semi-cylindrical openin 17 in communication therewith, which semi-cylindrical opening 17 registers with the semi-cylindrical opening 10 formed in the head or diaphragm 9 of the plate 6. The semi-cylindrical openings 10 and 17 are considerable less in diameter than the open- 1n ecured to the plate 13 and on the head 14 is an angular socket 18, formed by a projection arising from said head. This annular socket surrounds the semi-cylindrical opening 17, formed in the head 14, and is of such size and dimensions as to receive the head of the driving point of the anchor rod.

Formed on the plate 13 is a strengthening rib 19, and a driving shoulder or abutment 20. The plate 13 is provided with sharpened edges 30 on one edge, and 21 diagonally on the opposite edge, so that the plate 13 will readily penetrate or cut itself into the earth. 22 indicates the anchor rod, which is provided with an eye 23 to receive the guy Wire 24 and is provided with a screw threaded end 25 on to which the screw threaded driving point 26 may be applied and removed.

The driving point 25 is of such a size that it may be readily inserted through the opening in the plate 6, and through the opening 16 of the plate 13 when the anchor plates are closed, as illustrated in Fig. 3, which is a bottom plan view of the anchor plates in a closed position.

The anchor plates 6 and 13 are provided with openings or holes 27 and 28, through which small tie wires may be inserted for holding the plates together until they are positioned over the driving point and then IrJnay be broken by means of the tamping The installation of my anchor is easy and is as follows:

By means of an ordinary earth auger, the hole 29 is formed at substantially right angles to the line of strain. The rod 22 is then driven through the earth, as shown, until the driving point 26 passes within the hole 29 a sufficient distance to clear the wall of the hole 29 a sufiicient distance to permit the anchor when assembled, as in Fig. 3, to

be positioned between the head of the drivin point and the wall of the hole.

%he anchor in its unexpanded form, as illustrated in Fig. 3, is inserted in the hole 29 by means of any suitable tool for the purpose, beneath the driving point, and is seated over the driving point by lifting the anchor (the point 26 passing through the opening 16 and through the opening inplate 6), and the rod 22 is finally seated in the semi-cylindrical openin s 10 and 17, which snugly embrace the ro 22; then, b pressure on the anchor the ribs 11 an ,12 of the plate 6 are embedded in the earth, which prevents said plate from rotating on the rod 22. When the plate 6 has assumed this position, the plate 13 is then adjusted by means of pressure or driving on the rib 20,-

so that it occupies a position at right angles to the longitudinal axis of the plate 6, as illustrated in Figs. 1 and 2.

The head of the driving point 26 is seated in the angular socket 18, and being of greater cross sectional dimensions than the semi-cylindrical openings 10 and '17 is prevented from being pulled through the anchor when it is thus expanded. Should it be desired to preserve the anchor rod 22, it may be unscrewed from the-drivin point 26 and should the driving point 26 become broken, it can be unscrewed from the rod 22 and a new one applied. The driving point 26 may be applied to the ordinary standard anchor rods, and the plates and driving points may be disposed of to parties already supplied with the ordinary anchor rod. The sharpened edges 20 and 21 afiords an eas penetration into the earth of the ends 0 the plate 13.

It will beobserved by reference to Fig. 4 that when the anchor is applied and in use, the strain on the same is exerted a ainst the solid wall of the hole that is agalnst earth that has not been disturbed.

Having thus fully described my invention, what I claim is 1. An earth anchor comprising two plates pivotally connected so that the longitudinal axis of the plates may be relatively adjusted, there being openings in each plate through which the driving point of an anchor rod may be passed, said plates being further provided with registering openings of lesser diameters than the first mentioned openings, in which an anchor rod may be seated.

2. An anchor comprising two plates, one of which is provided with a cylindrical socket and the other with a cylindrical projection adaptedto be seated in said socket, the said socket being provided with a head in which there is formed an opening provided with a contracted portion and said projection 'beingprovided with a head provided with an opening and a recess, the said recess registering with the contracted por-' tion of the opening in the head of the socket.

3. An anchor comprisingtwo plates, one of which is provided with a centrally located circular socket formed, integrally with the plate and the other with a centrally located projection formed integrally with the plate adapted to be seated in said socket, the head of the socket and the projection being provided with coinciding openings through which the head of an anchor-rod may be passed, the said opening in the head of the socket terminating in a reduced portion or seat adapted to fit an anchor rod.

4. An anchor comprising two plates, said plates being provided with openings through which an anchor rod may be passed, one of said openings having a contracted portion adapted to receive the anchor rod when the anchor is in use, and apivotal connection between said plates.

5. An earth anchor comprising a series of plates, one of which is provided with a socket, and another of said plates being provided with a projection adapted to be seated in said socket, there being an opening in the head of the socket and the head of the projection through which the drivin point of an anchor rod may be passed, sai plates being further provided with registering openings adapted to receive an anchor rod, an anchor rod, and a detachable driving point for said rod. v

6. An earth anchor comprising an anchor plate provided with an opening through which the head of an anchor rod may be in serted in any position and with an anchor rod seat communicating with'said opening and having a less transverse dimension than the opening, an integral socket carried by.

the plate and located wholly to one side of the opening formed in the plate, an anchor rod provided with screw-threads on its lower end and a driving point provided withl-an angular head having a screw-threaded socket adapted to receive the screw-threaded end ofthe anchor rod, said point adapted to be passed through the opening in the plate and the head thereof seated in said socket whereby the rod may be'detached from the point without removing the anchor plate or head from where it is embedded.

7. An earth anchor comprising an anchor plate provided with an opening therethrough, through which the driving point of an anchor rod may be inserted and removed in any position and with a reduced opening leading from the first mentioned opening, an angular socket formed integral with. the plate and surrounding the reduced opening, an anchor rod provided on one end with an eye and on its opposite end with screw threads, a detachable driving point having an angular head provided with a screw threaded socket adapted to receive the screw threaded end of the anchor rod, the said name to this specification, in presence of two head adapted to be seated in the an ar subscribing wltnesses.

socket carried by the plate. to prevent the turning ofthe anchor head while the an- JASPER BLACKBURN 5 ehor rod is being unscrewed from the driv- Witnesses:

' in point. R. G. Onwm,

n testimony whereof, I have signed my M. E. KLEE. 

